Home
Class 11
MATHS
The variance of 20 observations is 5. If...

The variance of 20 observations is 5. If each observation is multiplied by 2, find the new variance of the resulting observations.

Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    MODERN PUBLICATION|Exercise EXERCISE|98 Videos

  • SETS

    MODERN PUBLICATION|Exercise EXERCISE|381 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise EXERCISE|304 Videos

Similar Questions

Explore conceptually related problems

Find the variance of the distribution:

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations.

The mean of 100 observations is 50. If one of the observations which was 50 is replaced by 150, the resulting mean will be :

The mean and variance of 7 observations are 8 and 16 respectively. If five observations are 2, 4, 10, 12, 14, find the remaining two observations.

If each observation of the data is increased by 5, then their mean

Find the mean and variance of the first n natural numbers.

If the mean of 8 observations be 15 and 2 be added to each observation, then the mean of new set of observations will be .

If each observation of a data is increased by 3, then what about the new man?

MODERN PUBLICATION-STATISTICS-EXERCISE
  1. The variance of 20 observations is 5. If each observation is multiplie...

    Text Solution

    |

  2. Find the mean deviation from the mean for the following data : 6,7,10,...

    Text Solution

    |

  3. Find the mean deviation from the mean for the following data : 6.5,5, ...

    Text Solution

    |

  4. Find the mean deviation from the mean for the following data : 13, 15,...

    Text Solution

    |

  5. Find the mean deviation from the mean for the following data. 38, 70, ...

    Text Solution

    |

  6. Find the mean deviation from the mean for the following data : 36, 72,...

    Text Solution

    |

  7. Find the mean deviation from the mean for the following data : 37, 48,...

    Text Solution

    |

  8. Find the mean deviation from the mean for the following data : 13, 15,...

    Text Solution

    |

  9. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  10. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  11. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  12. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  13. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  14. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  15. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  16. Find the mean deviation from the mean for the following data :

    Text Solution

    |

  17. If bar x is the mean and Mean Deviation from mean is MD (bar x), then ...

    Text Solution

    |

  18. If bar x is the mean and Mean Deviation from mean is MD (bar x), then ...

    Text Solution

    |

  19. Find the mean deviation from the median for the following data : 9, 1...

    Text Solution

    |

  20. Find the mean deviation from the median for the following data : 10, ...

    Text Solution

    |

  21. Find the mean deviation from the median for the following data : 13,1...

    Text Solution

    |